I might give that a try. Did you do it yourself? I am guessing I would need to solder in some sort of battery holder, right?

You can get a 4 cell holder at most Radio Shacks and use a wire to bypass one cell. Another thing you could try is one of those cheap LED lights in the dollar store. A lot of them use 3 AAA batteries and has a holder inside them you could solder leads to. A lot cheaper than the Radio Shack option.